She's built for speed and loves a challenge! Everyone's best friend Koko is chosen to carry the King of Buffertonia and his dignitaries on a special tour of Chuggington. Koko also gets hooked on a computer game trying to beat Hodge's high score and finds herself in a spot of trouble when her net shooter fails on the tracks! Brewster, Wilson, and Koko learn the importance of teamwork, leadership, how to handle an emergency, and more traintastic life skills!

She's built for speed and loves a challenge! Everyone's best friend Koko is chosen to carry the King of Buffertonia and his dignitaries on a special tour of Chuggington. Koko also gets hooked on a computer game trying to beat Hodge's high score and finds herself in a spot of trouble when her net shooter fails on the tracks! Brewster, Wilson, and Koko learn the importance of teamwork, leadership, how to handle an emergency, and more traintastic life skills!